How to audiowrite time shifting audio?

hello, I made a code for time shifting. The graph appears good but I'm having a problem to audiowrite the time shifted audio. I code the audiowrite but when I play it does not play any sound. help me thanks

clc;

close all;

[sf,Fs] = audioread('signal.flac');

t=linspace(2,4,size(sf,1))'/Fs;

%time shifting

subplot(5,1,4);

plot(t,sf);

title('Time Shifting')

xlabel('Time Period');

ylabel('Amplitude');

Answer 1

[Walter Roberson]

You cannot write an audio file at particular times. You must construct every sample from time 0.

In the simple case that would involve putting a number of samples with value 0 before the existing values, or removing some of the existing values. However you cannot just do that for fractional times